| 2021-01-01 | 010 | us | |
| 2021-01-01 | 020 | region | |
| 2021-01-01 | 030 | division | |
| 2021-01-01 | 040 | state | |
| 2021-01-01 | 230 | state› alaska native regional corporation | |
| 2021-01-01 | 250 | american indian area/alaska native area/hawaiian home land | |
| 2021-01-01 | 310 | metropolitan statistical area/micropolitan statistical area | |
| 2021-01-01 | 314 | metropolitan statistical area/micropolitan statistical area› metropolitan division | |
| 2021-01-01 | 330 | combined statistical area | |
| 2021-01-01 | 332 | combined statistical area› metropolitan statistical area/micropolitan statistical area | |
| 2021-01-01 | 335 | combined new england city and town area | |
| 2021-01-01 | 350 | new england city and town area | |
| 2021-01-01 | 355 | new england city and town area› necta division | |